Sabrina Sakaë was born Sunday morning in New York and weighed 8 lbs. 4 oz.

"Mother, father and baby Sabrina are all healthy and very happy and will be residing at their ranch in Colorado," the singer's rep said in a statement.

When the Mexico City-born singer's pregnancy was announced in June, a posting on her Web site read: "Her pregnancy is going well and she is healthy, very happy and full of energy, as usual."

Asked for Mottola's opinion about expanding the family, Thalía, 35, told PEOPLE EN ESPAÑOL that her husband, 58, has wanted to have kids together for years.

"If it had been up to Tommy, I would have had children from the first day we married. I would already have three or four," she said.

Thalía herself sees more kids in her future. She told PEOPLE recently, "I see a big family in the picture. "

As for what's next for the new mom, she is planning to write a book "on how to look gorgeous and phenomenal and incredible during your pregnancy," she told PEOPLE. It will be the second book for the singer, who also wrote Belleza: Lessons in Lipgloss and Happiness.